Massac County RainfallUnited StatesILMassac County30%Metropolis 30% Chance 30%Brookport 30% Chance 30%Mermet Lake 30% Chance Big BayBoazBrookportCretaceous Hills Nature PreserveFort Massac State ParkHillermanJoppaMassac Forest Nature PreserveMermetMermet LakeMetropolisMetropolis Municipal AirportNew ColumbiaRound KnobSamothShady GroveUnionville